Electric-light support.



PATENTED MAR. 10,-"1908.

P. N. --THEVENET. ELECTRIC LIGHT SUPPORT. AiPLIGATION FILED IBB. 26, 1907.

g l s on v a mvx 1| =====i=== m. u. E Q r ML PHILIP N. THE-VENET, OF DALLAS, TEXAS.

ELECTRIC-LIGHT SUPPORT.

Specification of Letters Patent.

. Patented March 10, 1908.

Application filedFebruary 26, 1907. Serial No. 359,403.

To all whom it may concern: 7 e

Be it known that I, PHILIP N. THEVEN a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented new and useful Improvements in Electric-Light Supports, of which the following is a specification.

This invention relates to a support for incandescent and other lights attached to a cord circuit, and relates more particularly to a swinging ceiling support whereby the light can be readily shifted to any desired point.

The invention has for one of .its objects to improve and simplify the construction and operation of devices of this character so as to be comparatively easy and inexpensive to manufacture, composed of few parts, and readily adjusted to make the light available in a large variety of positions.

A further object of the invention is the rovision of a ceiling support that is rotata- Ely mounted and on which is a sliding depending holder whereby the lamp is movable ack and forth on the support.

Another object of the invention is to provide a device of the character referred to which is composed of few parts so constructed as to be readily assembled and mounted in position on a ceiling or other supporting means.

With these objects in view and others, as

will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of arts which will be more fully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one of the embodiments of the invention, Figure 1 is a side elevation of the lamp support in operative position. Fig. 2 is a vertical section on line 2-2, Fig. 1. Fig. 3 is an enlarged detail view of the pivoted end of the rail or arm on which the lamp holder slides. Fig. 4 is a detail view of the upper end of the lamp holder.

Referring to the drawing, 1 designates the rail or armof the lamp support which is preferably ,a metal casting having longitudinal recesses 2 at the upper edges and extending approximately the full length thereof. At one end of the member 1 is formed an eye or ring 3 and at the opposite end is a stop or shaped casting composed of a top plate 8, v

and a bottom'plate 9 connected together by legs 10. The top plate 8 has an annular recess 11 which receives the ring 12 of a bracket 6. This ring is held in place by an annular ceiling plate 13, the latter being secured to the top plate by screwsx14, Fi 2, or other fastenings. The plate 13 is of arger diameter than the ring 12 and is rovided with countersunk apertures 15 lying outwardly from the periphery of the ring 12 so as to receive screws 16 whereby the support 5 is attached to the ceiling or other supporting structure. Obviously, the supporting plate 5 is secured to the top plate 8 after the ring 12 of the bracket 6 is in position and before the supporting plate 13 is screwed to the ceiling. The bottom plate or disk 9 has a centrally tapped aperture. 17 for receiving the pivot or bolt 18. The shank 19 of the bolt fits in the eye 3 of the rail 1 and serves as a pivot for the latter, and by means of this eye and the ring 12, the rail 1 can swing around a vertical axis to any position in the room. The top plate 8 of the support 5 has a central opening 20 for accommodating the usual porcelain or other insulating ceiling connector box 21 whereby the lamp cord 22 is connected with the lighting circuit, as will be readily understood; The pivot or bolt 18 is provided with a central bore through which I the cord circuit 22 for 'the lamp extends. By this means, the rail 1 can swing completely around without the cord circuit interfering.

Slidable back and forth on the rail 1 is a lamp support designated generally by 23.

- Th1s comprises a tubular member 24 having a U-shaped yoke 25secured to its upper end that spans the rail 1 from underneath. On the extremities of the vertical arms of the yoke 25 are rollers 26 that engage in the recesses or guideways 2 of the rail. These rollers support the holder 23 of the rail and permit the holder to freely slide thereon. The tubular member 24 is constructed in such amanner is to form aws 27 for frictionally gripping the lamp cord 22 that order to adjust the lamp vertically, a coun;

terbalance weight 30 slides up and down on the member 24 and to this weight is attached a flexible element or rope 31 which passes through an eye 32 on the upper end of the member 23 and is tied at 33 to the lamp cord 22 at a point between the holder 23 and the lamp, as shown in Fig. 1. As the lamp 29 is raised or lowered, the weight 30 slides on the member 24 and serves to hold the lamp in any desired position.

From the foregoing description taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains. The lamp support is of simple and durable construction and affords a large variety of adjustments of the lamp. By swinging the rail 1, the lamp can be moved to any position in the room and bysliding the holder 23 inwardly on the rail, the lamp can be adjusted toward the center F of the room and vice versa when the holder is moved outwardly. Furthermore, by means of the counterbalance mechanism on the holder 23, the lamp can be raised or lowered to any desired position.

I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof, but desire to have it understood that the apparatus shown is merely illustrative and that such changes may be made when desired, as are within the scope of the claims.

Having thus described the invention, what I claim is 1. In a device of the class described, the combination of a horizontal supporting member, a vertically disposed holder movably mounted at its upper end on the said mem ber, a lamp cord carried by the holder, a counterbalance weight permanently attached to the holder and having a limited movement thereon, a flexible element for connecting the weight to the lamp cord for counterbalancing the lamp on the latter, and a device on the upper end of the holder and movable therewith for operatively supporting the flexible element on the holder.

2. In a device of the class described, the combination of a horizontally extending member mounted for the swinging movement, a holder movable longitudinally of the member, a holder and counterbalance weight movable vertically on the holder and permanently attached thereto, a lamp cord supported by the holder, and a flexible element attached to one end of the cord and at the other end to the weight and arranged to permit the latter to counterbalance the lamp attached to the cord.

3. In a device of the class described, the combination of a horizontal rail having longitudinal recesses forming guideways, stops at the ends of the guideways, a \'ertically extending member, a U-shaped yoke rigidly mounted on the upper end of said member and arranged to embrace the rail from below, rollers on the yoke which engage in the guideways, and a lamp suspended by the said member, and a weight movable on and longitudinally of the member and arranged to counterbalance the weight of the lamp.

4. In a device of the class described, the combination of a rail having an eye at one end, a bracing member secured thereto and provided with a ring arranged in axial alinement with the eye, and a mounting secured to the ring of the member and eye of the rail for pivotally supporting the latter.

5. A device of the class described, the

combination of a supporting structure comprising a rail having an eye and a member having a ring spaced above the eye, with a pivotal mounting for the structure between the eye and ring, said structure comprising a top plate having an annular recess for receiving the ring, a bottom plate, a pivot secured to the bottom plate which extends through the eye of the rail, and means secured to the top plate for holding the ring thereon and for securing the mounting to a suitable support. 7

6. In a device of the class described, the combination of a horizontal swinging supporting structure having a pair of spaced rings or eyes, of a pivotal mounting for the structure, said mounting comprising a top plate provided with a circumferential recess for receiving one of the rings, a supporting plate attached to the top plate, means for securing the supporting plate to a suitable support, a bottom plate spaced apart and connected with the top plate and. provided with a tapped aperture, and a hollow pivot having a threaded engagement with the bot- .tom plate and extending through one of the rings of the supporting structure.

7. In a device of the class described, the combination of a swinging supporting structure, a holder slidable thereon, a lamp circuit cord attached to the holder, a lamp connected with the cord, an insulating support for connecting the cord circuit with a lighting system, and a mounting for the sup- In testimony whereof, I affix my signature porting -structu{e, the slaid mountin 0011111- in presence of two Witnesses.

prisin an annu or to 7 ate surroundln t e insula ing support, a l hotto'm plate, al id a v PHILIP THEVENET 5 hollow. pivot for securing the supporting Witnesses:

structure to the mounting and through the J. COLBEY THOMAS,

hollow of which the lamp circuit'cord passes. 1 W. LESLIE WILLIAMs. 

